Gas-engine valve.



\ APPLYIQATIOIIFILED JAR. .19, 1905.

PATENT'ED-J-UNE 2511907. B. 0. SKINNER. GAS, ENGINE-VALVE.

2 SHEETS-SHIIE'} 1.

No. 857,762. PATE'NTED- JUNE 25, 1207 B. c. SKINNER.

GAS ENGINE VALVE.

APPLICATION FILED JAN. 19,1905

2 SHEETS-SHEET 2.

, MINI! E s Q m BENJAMIN o. sKINNEI-t, OF OAKLAND, CALIFORNIA.

' GAS-ENGINE VALVE.

Specification. of Letters I'atent.

Patented 'j fine 25, 1907.

Application filed Tannery 19,1905. Serial 1%;241317.

To all whom it may concern: a

, Belt known that 1,.BENQIAMIN C. SKI-INNER, a citizen of the UnitedStates, residing at Oakland, in the county-of Alamedaand State ofCalifornia, have invented certain new and useful" Improvements inGas-Engine Valves, of whichthe following is a specification. i

My invention relates to gasengines, and: more particularly to a singleslide valve for controlling the inlet and exhaust andfor closing thecompression space. I have embodled my Invention 111' an en- I gine ofthe four-cycletype, and such menthe cylinder in section: Fig. '2 is aplan view:

' gine is'shown'in the accompanying drawings:' I

Figure Iis a side elevation withone end of Fig. 3-is an end elevation'ofthe cylinder head: Fig. 4 is in the nature of a diagram showing theinlet open and indicating the position of the .c'onnectionsfor operatingthe valve, at that time:'- Fi .5 is a similar kind of view, but showsthe e v aust bpen: Fig. 6 is a like. view, showing both inlet andexhaust pression'. a I

I- show a horizontal engine in the drawings, but my invention canbe'applied to the vertical type of engine as well. The bed frame '1,supports the cylinder 2 having the usual piston which is operated by theengine shaft 3 and. cranks through the. connecting rod 5..- .On theenijne shaft is a gear 6, which meshes with anot erfgear 7 'ournaled in.the engine bed and which is'of larger size so as to revolve; relativelytogear 6, in the ratio of 1 to'2. "Revolving withfgear 7 is'a cam 8 of.the peculiar shape shown. This cam has a high side 9, concentricportion11,-and'de controlling lever 13, whic is secured to a;-

- this rock shpression 12. The .camjo crates the valve rock shaft 14'ournaled in the bed frame "On is a rod .15 which extends longitudinallyill-the bed? frame and is connected' by'a 16 to-theislide valve 17,

' which is substantially; s 001 z sliapeds that it hastwo heads whichjtY the passage 18 in the cylinder head an intermediate stem;

The cylinder head is provided/witirthe; said transverse passage for the.valve, and with a single, and. preferably central port 19 which Iconnects this passage-with the interidr of. the

cylinder. Beyond the passagef '18 the cylin. der' head is provided withan inletport 21, and an'exhaust port 22. Both the cyhnder rounding space2a, communicatir closedas they would be at the time of com-f waterjacketed as shown. Secured to the ture having a centml open passage 23communicatingiwiththe exhaust port, and a sur- With the inlet port.';' Apipe 25 supplies the operating charge and is connected into the space24.

The relation between the central port 19, the valve and the inlet andexhaust ports 21 and 22 will be evident by a comparison. of Figs. 4,-5,and 6. The high side of the cam operatesthe valve lever so as to openthe inlet as shownin Fig. 4. The depression in the cam permits the endof the valve lever to fall in whereby the exhaustis opened as shown inFig. 5. The concentric part of the cam-renders the valve leverinoperative, the valve being'in the intermediate position shown in Fig.6, in which it is closingboth the inlet and exhaust. This is theposition during the compression stroke and the following Workin stroke.

' gnition of the charge may be made by any suitable igniter but I havenot shown such an igniter as itforms no part of my invention, and is notrequired for a full comprehension of thesame'.

The operation of the engine will be very easily understood. The chargeis drawn in through. the inlet passage and port,- which charge, owing tothe spool shape of the valve can enter the cylinder through the singleport 19, the parts heingthen in the position of Fig.4. The transition ofthe free end of the valve rod fiomthe high side of the cam to .itsconcentric portion closes hoth inlet and exhaust and the spacesurrounding the narrow-part of the spool-shaped valve becomes a part ofthe compression space. During the compression and the succeeding strokecaused by the explosion, the valve remains in this intermediateposition'asindicated by Fig. 6. On the exhauststroke, the free end ofthe valve lever falls into the depression in the cam as shown in Fig. 5,and the burned out charge escapes through the port '19, around the stemof the spool, and out by Way of the open exhaust passage. The free endof .the valve lever is preferably provided with a roller 26. a

The advantages of my single slide valve will readily be apparent. Itgreatly simplifies the construction of gas engines both as totheconstruction of the valves --and to the end of the cylinder head is atubular struc

